Home / Comparisons / Agent 37 vs E2B
Priced at the same plan size and billing period, with every limit taken from the vendor page.
| Metric | Agent 37 | E2B |
|---|---|---|
| 2 vCPU / 4 GB sandbox, continuous, per month | $4.76 | $121.18 |
| Free sandbox hours per month | Not published, prepaid balance model | 100 hours |
| Sandbox session persistence | Persistent across sessions | Time limited: 1h Hobby, 24h Pro |
| Agent harness compatibility | Any harness, one API call | Primarily E2B SDK based agents |
| Official SDKs and languages | 1, API first | Multiple, including Python and JS/TS |
| Isolation mechanism | gVisor | Firecracker microVMs |
| Egress network policy | Firewalled per sandbox, public internet only | Configurable per sandbox |
| Entry paid plan, monthly minimum | $0.00, pay as you go | $150.00 |
| Disk quota enforcement | Hard quota per sandbox | Configurable, billed separately |
| Market maturity | New, launched 2026 | Established, broad integration ecosystem |
| Enterprise or custom pricing | Yes | Yes |
| Rows where the two differ | 4 of 7 | 3 of 7 |
Running one 2 vCPU, 4 GB sandbox around the clock costs $4.76 a month on Agent 37 against $121.18 on E2B's Pro plan, and Agent 37 has no monthly minimum since it meters a prepaid balance by the minute. E2B answers back with a 100 hour free tier, published SDKs in more languages, and a longer track record most integrations are already built against. Teams spinning up dozens of agent sandboxes save the most on Agent 37; teams leaning on existing E2B SDK integrations have less reason to move.
Prices are list prices in US dollars, taken without promotional discounts. Methodology